"They're just like us".
Javid said it is likely that the pair came into contact with it at a different site from Yulia and her father Sergei Skripal, a former colonel in Russian military intelligence.
Sam Hobson was with Rowley when he became violently ill on Saturday.
Authorities initially thought the two had taken a contaminated batch of heroin or crack cocaine.
Police did not point to any individuals or nations in the more recent case, with Basu saying "we are not in a position to say whether the nerve agent was from the same batch that the Skripals were exposed to".
The Cobra national security committee, including senior government officials and cabinet ministers, met on Wednesday to discuss the developing case, which was being "treated with the utmost seriousness". Britain condemned that attack as a hostile act by Russia and went on to expel 23 Russian diplomats.
Police cordoned off five locations in Salisbury and Amesbury as a precaution.
"I'm not so easily scared, but there has to be more to it", said Justin Pritchard, enjoying a beer with a friend.
Here's what we know about the poisoning and the couple's condition. Now this is completely separate.
- Six sites visited by Mr Rowley and Ms Sturgess before they fell ill were cordoned off.
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Police do not believe that the Amesbury pair were deliberately targeted but are still investigating whether there is a link to the Salisbury poisoning.
Mr Javid told the House of Commons: "The use of chemical weapons anywhere is barbaric and inhumane. It's the fear factor, for everybody".
The areas include the couple's home, a chemist where they had gone to pick up a prescription, a Baptist church where they attended a fete and a park.
Salisbury is 13 kilometers from Amesbury.
A witness told Sky News that one of the victims had appeared to be foaming at the mouth, "sweating loads, dribbling and. making amusing noises".
He added: "We have taken a very robust approach to decontamination and there is no evidence that either the man or the woman in hospital visited any of the places that were visited by the Skripals".
"Of course we're concerned that these substances have been used repeatedly in Europe", Kremlin spokesperson Dmitry Peskov said Thursday. Russian Federation denied any involvement.
He said that the assailant could have discarded the residue Novichok four months ago in the park in Salisbury, or indeed in the nearby river, which is low at the moment.
Uglev said that A-234 could remain deadly for a long time - even if a few tiny drops are left in a syringe or impregnated into wood.
- Where did the victims first come into contact with it?